Microbial selection pressure is not a prerequisite for granulation: Dynamic granulation and microbial community study in a complete mixing bioreactor

Dynamic granulation process. Step A, young granules with rough surface formed based on the initial aggregation of the bioflocs; step B, granule growth causing by bioflocs attachment; step C, another self-aggregation domination driving by the remaining flocculent biomass and newborn cells collision; step D, re-gr of the detached bioflocs, newborn cells and crushed aged granules.